newage - agenda (indico)...newage μ-pic based tpc with electronics 3-d tracks proposal plb 578...
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NEWAGE
Kentaro Miuchi
KOBE University
K. Nakamura(2), Y. Yamaguchi(1) , T.Hashimoto(1), R. Yakabe(1), T. Ikeda(1), R.Taishaku(1)
T.Tanimori(2), K.Kubo(2), A.Takada(2), H.Nishimura(2), J.D.Parker(2), T.Mizumoto(2), Y.Mizumura(2), Y.Matsuoka(2), S.Komura(2), A.Takeda(3), H.Sekiya(3),
(1) Kobe university
(2) Kyoto university
(3) ICRR
Contents
NEWAGE
Input for discussion
NEWAGE
NEWAGE
μ-PIC based TPC with electronics
3-D tracks
Proposal
PLB 578 (2004) 241-246
First direction-sensitive DM limits
PLB654 (2007) 58
Underground results
PLB686 (2010) 11, PTEP (2015) 043F01s
Phase for “low BG detector”
CYGNUS 07
to
size
head-tail
gas study
energy resolution
energy threshold
diffusionRadon
exclusion limit
20keV
F 1mm
10Torr CF4DIRECTIONALITY
BG
position resolution
gammas
neutrons
z-fiducialization
stability
quenching
DISCOVERY
NEWAGE strategy since its new ages
DRIFT
NEWAGE Miuchi
Hashimoto
angular resolutionskymap
NEWAGE detectorNEWAGE-0.3b’
Detection Volume: 31×31×41cm3
Gas: CF4 at 0.1atm (50keVee threshold)
Gas circulation system with cooled charcoal
NEWAGE-0.3b’ inside view
Detection Volume: 30×30×41cm3
GEM- 31×32 cm2
- 8-segmented- hole pitch : 140mm- hole diameter: 70mm- insulator : LCP 100mm- gain : ~5- made by Scienergy, Japan
m-PIC(Micro-pixel chamber) - 31×31cm2
- pitch : 400mm- gain : ~1000- made by DNP, Japan
Field cageDrift length: 41cm PEEK + copper wires
NEWAGE-0.3b’ readouts
m-PIC is X-Y readout
General purpose
FPGA-based electronics
since early 2000’s.
Updates are always
on-going
256ch
connector
256ch
ASD box
FPGAs
NEWAGE-0.3b’
(inside)
NEWAGE
Kamioka RUN14 results
• Energy spectrum• Threshold : 100 => 50keV• BG rate : 1/10@100keV
• Skymap, cosq distribution• Set limit by significant difference in 2-binned measured cosq and DM-wind simulated cosq
RUN5 (NEWAGE-0.3a)RUN14 (NEWAGE-0.3b)
Energy spectrum
skymap
cosθ distribution
50-60keV 100-110keV
RUN14• period : 2013/7/20-8/11, 10/19-11/12
• live time : 31.6 days• fiducial volume:28x24x41cm3
• mass : 10.36g• exposure : 0.327 kg・days
NEWAGE underground run
• Obtained limit : 557pb @200GeV (Best direction-sensitive limit)
• Improved one order of magnitude from previous RUN5
red : gas, with directional analysisblue : gas, without directional analysis green : solid, liquid detector
auto-scanning is demonstrated
“vertical” and “horizontal”
detectors would be needed
Detection efficiency in Galactic-coordinate
Time variation of the efficiency map in the
galactic coordinate
lab-coordinate
galactic coordinate
galactic longitudegalacticlatitude
Galactic-plane sky-map
correlation with
efficiency
= consistent with
isotropic
+時間情報
020406080100120140160180
galactic longitude
180200220240260280300320340
ga
lac
tic l
ati
tud
e
-80
-60
-40
-20
0
20
40
60
80
azimuth angle(degree) for elevation=0
-80 -60 -40 -20 0 20 40 60 80
ele
vation
an
gle
(de
gre
e)
-80
-60
-40
-20
0
20
40
60
80
Energy 50-100keV
lab-coordinate
galactic coordinate
12
Japan/NEWAGE status
MEXT “Scientific Research on Innovative
Areas”
FY 2014-2018
KAMLAND, CANDLES, XMASS, NEWAGE,
SK…
Additional proposal for “International
collaborative work” is being announced.
Takeuchi
@NDM2014
International workshop
May,2016
Tokyo
+Emulsion
($0.6M)
14
SF6 50Torr
DRIFT Planetriple GEM
(can be replaced by request)
(9×30×30cm2)
1m
1m
1m1m
μPIC+GEM
(4×30×30cm2)
triple GEM
(5×30×30cm2)
HV X-ray tube
• Budget proposal for Japanese KAKENHI(Result in coming April)
– Total 0.4M (40 million yen) (4 years)
half-NEWAGE half-CYGNUS “observatory”
CYGNUS-KM1a1.26 m3×85%×2years×300g/m3 > 200 kg days
NEWAGE-0.6a0.36 m3×70%×2years×300g/m3 > 50kg days
FUNDED:total 0.35M(35million yen)
in 4years
15
• PLAN: develop 1m^3 low-BG volume
– 2 years for construction
– 2 years for initial measurement
– “propose-based open observatory” in 4 years
• Hope to be a kick-off case of the CYGNUS project
CYGNUS-TPC
CYGNUS-KM (Miuchi)
Advisory board()
Users committee()
CYGNUS-Boulby
CYGNUS-GS
CYGNUS-US
CYGNUS-South
LOI first
MOU later
CYGNUS-KM1a
NEWAGE-0.6a
Discussion
16
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